Bleach
400

DEICIDE2

01)1: Ichimaru's Bankai, finally revealed!! What is the true nature of that invincible smile he showed Ichigo?!

03)1: --Gin...?

04)white: The smiling devil...!!

05)1: ...yeah...2: ...you really are a creepy kid, after all.3: Ooh, scary.4: If I don't finish you off soon...

06)1: things might get a little hairy.2: At what point did he shorten his sword?3: Was I too distracted by something and missed it!?4: No, I've kept my consciousness solely on his blade...5: There's no possible way I could have missed a contraction of that length--6: Alrighty then.7: Seriously, though, what was that all about? 8: Seemed like my Bankai got stopped pretty easily back there--

07)1: Guess I just gotta2: fight you normal-wise.

08)1: Quite a blade you got there.2: Even on the offensive like this, it feels like mine's about to snap. 3: That's a good one!4: Just let it break in two, then!5: If my hypothesis is correct,6: He just shortened his sword right now, and didn't release his Bankai.

09)1: If my hypothesis is correct,2: if he angles that blade's point this way, it's all over!!

13)1: ...thought so.

14)1: The scariest thing about your Bankai2(2b): isn't the length, or its destructive power.3: It's the speed at which it constricts. 4: I thought about it.5(2b): There's no point to teaching me the length before the fact. In fact, it'd be advantageous for you not to tell me.6(2b): There's also no point to you going as far as swinging it around and cutting the town in two. 7: It'd be more advantageous for you to just attack me. 8(2b): The reason you showed all that to me was to take my consciousness away from the speed of its contraction.

15)1: Am I wrong?!2: ...nooo.3: ...after only one attack, he noticed.4: And on the second, he dodged. 5: Scary6: Scary7: This is really gonna drag on.8: Yep, yep...9: Still.10: Guess there's no use now that the cat's outta the bag.11(2b): Lemme just explain it to you...the speed at which Kamishini no Yari extends.12: ...did it reach?

16)1: 500 times 2: what you saw just now.3: Kamishini no Yari isn't the "Longest Zanpakutou."4: It's the "Fastest Zanpakutou."5: But even knowing that6: leaves you with no chance for victory, pal.

19)1: ...what?2: My soul3: will reconstruct. 4: ...what are you babbling on about now?side: Now, onward to supreme existence...5: It seems that, at long last, 6: my soul has begun to understand the will of the Hougyoku.

In "speed at which it constricts", change the “constricts” to convey “contraction and expansion” (伸縮). This term appears once more at the end of the page.

"did it reach?" to "it reached you?" (or maybe just adding the you for making it clearer.)"500 times what you saw just now.” The meaning of the complete text (including the information from previous sentences) to me would be “the speed (of the extension) is 500 times (the one) of that (which have reached you) just now." (So other words would fit better, for instance, there's no specific mention of seeing and there’s the meaning of the declarative や.)

In the end "理解" could mean sympathy, so the sentence would indicate that "the Hougyoku had begun to sympathize with his soul."